TCP 程序设计（即时通讯）

原创

是丹凤呀 2022-08-19 13:19:14 博主文章分类：Java ©著作权

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TCP程序设计实例
思路：
1、分别编写了MyServer，MyClient的JFrame文件和MyServerReadThread、MyClientReadThread的线程类文件
2、在MyServer，MyClient中建立read()和write()方法，
3、在MyServer中在按钮发送中调用write()方法，在启动服务按钮中开启线程MyServerReadThread，在MyServerReadThread线程中run()方法中调用server.read()方法。
4、在MyClient中进行与MyServer相类似的操作

package com.IM;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JButton;
import javax.swing.JTextArea;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.awt.event.ActionEvent;

public class MyServer extends JFrame
    private ServerSocket server;
    private Socket socket;
    private JTextArea textArea;
    private boolean isRunning=true;

    private JPanel contentPane;

    public boolean isRunning() {
        return isRunning;
    }

    public void setRunning(boolean isRunning) {
        this.isRunning = isRunning;
    }

    /**
     * Launch the application.
     */
    public static void main(String[] args) {


        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    MyServer frame = new MyServer();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public MyServer() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 445, 491);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        JButton button = new JButton("启动服务");

        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.out.println("服务器启动");
                try {
                    server=new ServerSocket(8080);
                    socket=server.accept();//等待连接,准备开启线程
                    Thread t=new Thread(new MyServerReadThread(MyServer.this));//不很懂
                    t.start();
                    System.out.println("有客户端连接");


                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

            }
        });


        button.setBounds(10, 10, 93, 23);
        contentPane.add(button);

        textArea = new JTextArea();
        textArea.setBounds(10, 396, 312, 47);
        contentPane.add(textArea);

        JButton button_1 = new JButton("发送");
        button_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                write();//进行写操作
            }
        });
        button_1.setBounds(332, 396, 93, 23);
        contentPane.add(button_1);
    }
    public void read(){
        InputStream is;
        try {
            is = socket.getInputStream();
            BufferedReader br=new BufferedReader(new InputStreamReader(is));
            String line=br.readLine();
            System.out.println("服务器接收到信息"+"\n"+line);

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    public void write(){
        try {
            OutputStream os=socket.getOutputStream();
            BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(os));
            String words=textArea.getText();
            System.out.println("客户端说："+"\n"+words);
            bw.write(words+"\n");
            textArea.setText("");//注意写完之后清空
            bw.flush();      
        } catch (IOException e) {
            // TODO Auto-generated catch block

package com.IM;

public class MyServerReadThread implements Runnable{
    private MyServer server;
    //在构造器中传参数
    public MyServerReadThread (MyServer server){
        this.server=server;

    }

    @Override
    public void run() {
    while(true){
        server.read();
        }
    }
    public MyServer getServer() {
        return server;
    }

    public void setServer(MyServer server) {
        this.server = server;
    }


}

package com.IM;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTextArea;
import javax.swing.DefaultButtonModel;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JList;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import java.awt.event.ActionEvent;

public class MyClient extends JFrame
    private Socket socket;
    private JTextArea textArea;
    private JPanel contentPane;
    private JList list;
    private DefaultListModel<String> modle;


    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    MyClient frame = new MyClient();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public MyClient() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 484, 442);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        textArea = new JTextArea(); 
        textArea.setBounds(10, 299, 332, 78);
        contentPane.add(textArea);

        JButton btnNewButton = new JButton("发送");
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                write();
            }
        });
        btnNewButton.setBounds(352, 303, 106, 60);
        contentPane.add(btnNewButton);

        list = new JList();     
        list.setBounds(10, 22, 332, 268);
        modle=new DefaultListModel<>();
        list.setModel(modle);
        contentPane.add(list);

        JButton btnNewButton_1 = new JButton("连接服务器");
        btnNewButton_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                try {
                    System.out.println("连接");
                     socket=new Socket("192.168.0.35", 8080);
                     Thread t=new Thread(new MyClientReadThread(MyClient.this));
                     t.start();     
                } catch (UnknownHostException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }
        });
        btnNewButton_1.setBounds(352, 40, 106, 67);
        contentPane.add(btnNewButton_1);
    }

    public void read(){ 
        try {
            InputStream is = socket.getInputStream();
            BufferedReader br=new BufferedReader(new InputStreamReader(is));
            String line=br.readLine();
            modle.addElement("服务器说的"+line); //出错
            System.out.println("服务器说的"+line);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    public void write(){
        try {
            OutputStream os=socket.getOutputStream();
            BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(os));
            String words=textArea.getText();
            modle.addElement("客户说： "+words);//
            System.out.println("客户端说"+words);
            bw.write(words);
            textArea.setText("");
            bw.flush();      
        } catch (IOException e) {
            // TODO Auto-generated catch block

package com.IM;

public class MyClientReadThread implements Runnable{
    private MyClient client;
    public MyClientReadThread(MyClient client) {
        this.client=client;
    }
    @Override
    public void run() {
    while(){
        client.read();  
        }
    }

}

TCP 程序设计（即时通讯）_.net